Heat exchanger



0. A. LABUS HEAT EXCHANGER July 1, 1930.

Filed April 21, 1927 TTOR Patented July 1, 1930 UNITED STATES PATENT VOFFICE OTTO A. LABUS, OF WISCONSIN RAPIDS, WISCONSIN, ASSIGNOB TOAMERICAN CAR- BONIC MACHINERY COMPANY, OF WISCONSIN RAPIDS, WISCONSIN, ACORPORATION OF WISCONSIN Application filed April 21,

This invention aims to provide" an improved heat exchanger adapted to beused as a water cooler, steam condenser, brine cooler and for otherpurposes.

One of the objects of the invention is to produce an improved compactheat exchanger having a maximum heating or cooling surface.

Other objects and advantages of the 1nvention will appear. in thespecification, when considered in connection with the accompanyingdrawing wherein I have shown one illustrative embodiment thereof and, inwhich,

Fig. 1 is a central sectional View of a heat exchanger embodying theinvention; and

Fig. 2is a cross sectional view taken on the line 22 of Fig. 1.

Referring particularly to the drawing and to the embodiment of myinvention there shown, my heat exchanger which preferably is of thecounter-flow type. is carried within a shell 10 which is preferablycylindrical. Within the shell or casing is aconcentrically arranged core11, which, in the present instance, is a closed cylinder although it maybe solid if desired. Between the inner core and the shell I secure aspiral vane 12 to provide a passageway or conduit substantiallyrectangular in cross section, for a cooling or heating medium. Herein,the core and vane are shown as integrally united'to the shell eitherbeing cast in one piece or fabricated in any manner.

As shown in Fig 1, I provide a plurality of spiral, concentric coils 13in the spiral conduit between the shell 10 and core 11, each coil beingthreaded through the conduit and connected at its ends to inlet andoutlet manifolds 14 located within the opposite ends of the shell. Thecoils are preferably concentric and are spaced only a slight distanceapart so that they almost fill the spiral passageway and present a largeheating or cooling surface to the heating or cooling medium. I

To close both ends of the shell, I provide removable heads 15 eachpreferably having an annular groove to receive the end of the shell andadapted to be clamped against the HEAT EXCHANGER 1927. Serial No.185,529.

end of the shell. To make water tight oints some suitable packingmaterial is placed in the grooves.

I have shown the heads square and overhanging the shell. Around theheads on the outside of the shell I provide a plurality of alignedopenings for tie rods 16 to clamp the shell between them against thepacking or other material in the bottoms of the grooves. At the cornersof the heads I proyide lugs or feet 17 shaped like angle irons in crosssection, which are adapted to rest upon a floor or supporting stand andsup port my exchanger on any side in a horizontal position. However, itmay also be set in a vertical position if desired.

The heads 15 have openings through which extend inlet and outlet pipes18 connected to the respective manifolds. I provide suitable packingglands around these pipes within the openings to make water tightjoints. Also, inlet and outlet pipes 19 for the heating or coolingmedium are shown as connected to the heads.

To assemble my exchanger, assuming that the spiral vane is welded orotherwise secured to the shell and core, the coils are screwed into thespiral passage and the manifolds are then preferably welded to them. Theheads are slipped on over the inlet and outlet pipes 18 and the tie rodsare inserted to clamp them in place. From the arrows in Fig. 1 it willbe seen that the heating or cooling medium enters and flows around thepassageway encircling the coils in the opposite direction or counter tothe flow of the fiuid to be heated or cooled therein. The flow area ofthe heating or cooling medium is sufficiently large to permit it to passrapidly through the passageway and the exposed surfaces of the coilswill rapidly exchange the heat.

While I have described my improvements as embodied in a compact form ofeasing including a core, it will be understood by those skilled in theart, that a spiral conduit, as a unit, may be formed in various ways,and my improvements may be embodied therein.

Obviously the present invention i I 9? Festricted to the particularembodiment thereof herein shown and described. Moreover, it is notindispensable that all the features of the invention be used conjointly,since they may be employed advantageously in various combinations andsub-combinations.

What I claim is:

1. A heat exchanger comprising, in combination, a' shell, a core withinthe shell, a spiral vane between the core and the shell providing aspiral conduit for a heat exchanging medium, a plurality of concentriccoils within the spiral conduit, manifolds for the coils beyond theopposite ends of the core, heads clamped on the ends of the shells,inlet and outlet pipes extending through the heads and connected to therespective manifolds and inlet and outlet pipes for the heat exchangingmedium also connected to said heads.

2. A heat exchanger comprising a horizontal cylindrical shell having. aspiral conduit formed therein, spiral coils Within the conduit, fluidconnections for the coils and for the conduit, and substantially squareheads secured to and closing the ends of said shell thereby adapting theexchanger to be set in a horizontal position.

3. In a heat exchanger comprising a c lindrical shell havinga pluralityof pipes t erein, substantially square closures clamped on the shell andhaving lugs providing feet at the corners thereof adapted to support theexchanger in a horizontal position on any of the side edges of theclosures.

j In testimony, that I claim the foregoing as my own, -I have heretoafiixed my signature.

OTTO A. LABUS.

